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<div class="title">image.cpp</div>  </div>
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<a href="image_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * This confidential and proprietary software may be used only as</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * authorised by a licensing agreement from ARM Limited</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> *   (C) COPYRIGHT 2013 ARM Limited</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> *       ALL RIGHTS RESERVED</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * The entire notice above must be reproduced on all authorised</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> * copies and copies may only be made to the extent permitted</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> * by a licensing agreement from ARM Limited.</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;</div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="image_8h.html" title="Functions for working with bitmap images.">image.h</a>&quot;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#include &lt;fstream&gt;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#include &lt;iostream&gt;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;</div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="keyword">using namespace </span>std;</div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;</div>
<div class="line"><a name="l00017"></a><span class="lineno"><a class="code" href="image_8cpp.html#ad7fed8ed5795a8ddd3e86265cc5a4d31">   17</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="image_8cpp.html#ad7fed8ed5795a8ddd3e86265cc5a4d31">saveToBitmap</a>(<span class="keywordtype">string</span> filename, <span class="keywordtype">int</span> width, <span class="keywordtype">int</span> height, <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* imageData)</div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;{</div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;    <span class="comment">/* Try and open the file for writing. */</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;    fstream imageFile(filename.c_str(), ios::out);</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;    <span class="keywordflow">if</span>(!imageFile.is_open())</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;    {</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;        cerr &lt;&lt; <span class="stringliteral">&quot;Unable to open &quot;</span> &lt;&lt; filename &lt;&lt; <span class="stringliteral">&quot;. &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;    }</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;    <span class="comment">/* Magic header bits come from the bitmap specification. */</span></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;    <span class="keyword">const</span> <span class="keyword">struct </span><a class="code" href="structbitmap_magic.html" title="Bitmap magic file header numbers.">bitmapMagic</a> magic = { {0x42, 0x4d} };</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;    <span class="keyword">struct </span><a class="code" href="structbitmap_header.html" title="Bitmap header.">bitmapHeader</a> header;</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;    <span class="keyword">struct </span><a class="code" href="structbitmap_information_header.html" title="Bitmap information header.">bitmapInformationHeader</a> informationHeader;</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="comment">     * Each row of the data must be padded to a multiple of 4 bytes according to the bitmap specification.</span></div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="comment">     * This method uses three bytes per pixel (hence the width * 3).</span></div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="comment">     * Then we increase the padding until it is divisible by 4.</span></div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;    <span class="keywordtype">int</span> paddedWidth = width * 3;</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    <span class="keywordflow">while</span>((paddedWidth % 4) != 0)</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;    {</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;        paddedWidth++;</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;    }</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;    <span class="comment">/* Setup the bitmap header. */</span></div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;    header.<a class="code" href="structbitmap_header.html#ad06f4dbac80aa4d85163d3862ed34197" title="Total size of the bitmap in bytes.">fileSize</a> = <span class="keyword">sizeof</span>(magic) + <span class="keyword">sizeof</span>(header) + <span class="keyword">sizeof</span>(informationHeader) + paddedWidth * height;</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;    header.<a class="code" href="structbitmap_header.html#ad1281577a12cb4314cfe869877135231" title="Reserved field which can be application defined.">creator1</a> = 0;</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    header.<a class="code" href="structbitmap_header.html#aafdafe00204ad8448ab9cd98aa3040b2" title="Reserved field which can be application defined.">creator2</a> = 0;</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;    header.<a class="code" href="structbitmap_header.html#a5e74a0bfe6340ad581369b48bce59dbe" title="Offset in bytes to the beginning of the image data block.">offset</a> = <span class="keyword">sizeof</span>(magic) + <span class="keyword">sizeof</span>(header) + <span class="keyword">sizeof</span>(informationHeader);</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    <span class="comment">/* Setup the bitmap information header. */</span></div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;    informationHeader.<a class="code" href="structbitmap_information_header.html#afd30cb5246210713920211afb56f13f0">size</a> = <span class="keyword">sizeof</span>(informationHeader);</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;    informationHeader.<a class="code" href="structbitmap_information_header.html#abb2a108b489900502eb06b3982b0dc02">width</a> = <a class="code" href="structbitmap_information_header.html#abb2a108b489900502eb06b3982b0dc02">width</a>;</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;    informationHeader.<a class="code" href="structbitmap_information_header.html#a5c5209b385872825e8f9c629ac288a12">height</a> = <a class="code" href="structbitmap_information_header.html#a5c5209b385872825e8f9c629ac288a12">height</a>;</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;    informationHeader.<a class="code" href="structbitmap_information_header.html#a92ce2fb0499b65ccb0dccbec12b44c4c">numberOfColorPlanes</a> = 1;</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;    informationHeader.<a class="code" href="structbitmap_information_header.html#ae25aec64837eed48f745ae7728af7dff">bitsPerPixel</a> = 24;</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;    informationHeader.<a class="code" href="structbitmap_information_header.html#a1a6659ee7987cc1be662ec93a6f2eef7">compressionType</a> = 0;</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;    informationHeader.<a class="code" href="structbitmap_information_header.html#abd9001c6c1eefbef9c53f15ec6f3162a">rawBitmapSize</a> = paddedWidth * <a class="code" href="structbitmap_information_header.html#a5c5209b385872825e8f9c629ac288a12">height</a>;</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;    informationHeader.<a class="code" href="structbitmap_information_header.html#a39272c25c46f5628cdefc3965f4f6e0d">horizontalResolution</a> = 2835;</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;    informationHeader.<a class="code" href="structbitmap_information_header.html#a9596ce6332941aafbbf85b7e379e948f">verticalResolution</a> = 2835;</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    informationHeader.<a class="code" href="structbitmap_information_header.html#ab8a3e77e6b66d1361d65523a99104f5f">numberOfColors</a> = 0;</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    informationHeader.<a class="code" href="structbitmap_information_header.html#aa6296b037bae6831a6c53f6115c29769">numberOfImportantColors</a> = 0;</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;    <span class="comment">/* Try to write the header data. */</span></div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    <span class="keywordflow">if</span>(imageFile.write((<span class="keywordtype">char</span>*)&amp;magic, <span class="keyword">sizeof</span>(magic)).bad() ||</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;       imageFile.write((<span class="keywordtype">char</span>*)&amp;header, <span class="keyword">sizeof</span>(header)).bad() ||</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;       imageFile.write((<span class="keywordtype">char</span>*)&amp;informationHeader, <span class="keyword">sizeof</span>(informationHeader)).bad())</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;    {</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;        cerr &lt;&lt; <span class="stringliteral">&quot;Failed to write bitmap header. &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;        <span class="keywordflow">if</span> (imageFile.is_open())</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;        {</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;            imageFile.close();</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;        }</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;    }</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> y = height - 1; y &gt;= 0; y--)</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;    {</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> x = 0; x &lt; <a class="code" href="structbitmap_information_header.html#abb2a108b489900502eb06b3982b0dc02">width</a>; x++)</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;        {</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;            <span class="comment">/* The pixels lie in RGB order in memory, we need to store them in BGR order. */</span></div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;            <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> rgb[3];</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;            rgb[2] = imageData[3 * (y * informationHeader.<a class="code" href="structbitmap_information_header.html#abb2a108b489900502eb06b3982b0dc02">width</a> + x) + 0];</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;            rgb[1] = imageData[3 * (y * informationHeader.<a class="code" href="structbitmap_information_header.html#abb2a108b489900502eb06b3982b0dc02">width</a> + x) + 1];</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;            rgb[0] = imageData[3 * (y * informationHeader.<a class="code" href="structbitmap_information_header.html#abb2a108b489900502eb06b3982b0dc02">width</a> + x) + 2];</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;            <span class="keywordflow">if</span>(imageFile.write((<span class="keywordtype">char</span>*)&amp;rgb, 3).bad())</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;            {</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;                <span class="keywordflow">if</span> (imageFile.is_open())</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;                {</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;                    imageFile.close();</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;                }</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;                <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;            }</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;        }</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;        <span class="comment">/*</span></div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;<span class="comment">         * At the end of the row, write out blank bytes to ensure the row length is</span></div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;<span class="comment">         * a multiple of 4 bytes (part of the bitmap specification).</span></div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="comment">         */</span></div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> x = width * 3; x &lt; paddedWidth; x++)</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;        {</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;            <span class="keywordtype">char</span> b = 0;</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;            <span class="keywordflow">if</span>(imageFile.write(&amp;b, 1).bad())</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;            {</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;                <span class="keywordflow">if</span> (imageFile.is_open())</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;                {</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;                    imageFile.close();</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;                }</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;                <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;            }</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;        }</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;    }</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;    <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;}</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;</div>
<div class="line"><a name="l00115"></a><span class="lineno"><a class="code" href="image_8cpp.html#a24ebc43a2f3d72aff84912a1a69f2c39">  115</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="image_8cpp.html#a24ebc43a2f3d72aff84912a1a69f2c39">loadFromBitmap</a>(<span class="keyword">const</span> <span class="keywordtype">string</span> filename, <span class="keywordtype">int</span>* <span class="keyword">const</span> <a class="code" href="structbitmap_information_header.html#abb2a108b489900502eb06b3982b0dc02">width</a>, <span class="keywordtype">int</span>* <span class="keyword">const</span> <a class="code" href="structbitmap_information_header.html#a5c5209b385872825e8f9c629ac288a12">height</a>, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> **imageData)</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;{</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;     <span class="comment">/* Try and open the file for reading. */</span></div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;    ifstream imageFile(filename.c_str(), ios::in);</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;    <span class="keywordflow">if</span>(!imageFile.is_open())</div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;    {</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;        cerr &lt;&lt; <span class="stringliteral">&quot;Unable to open &quot;</span> &lt;&lt; filename &lt;&lt; <span class="stringliteral">&quot;. &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;    }</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;    <span class="comment">/*</span></div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;<span class="comment">     * Read and check the headers to make sure we support the type of bitmap passed in.</span></div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;    <span class="keyword">struct </span><a class="code" href="structbitmap_magic.html" title="Bitmap magic file header numbers.">bitmapMagic</a> magic;</div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;    <span class="keyword">struct </span><a class="code" href="structbitmap_header.html" title="Bitmap header.">bitmapHeader</a> header;</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;    <span class="keyword">struct </span><a class="code" href="structbitmap_information_header.html" title="Bitmap information header.">bitmapInformationHeader</a> informationHeader;</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;    <span class="keywordflow">if</span> (imageFile.read((<span class="keywordtype">char</span>*)&amp;magic, <span class="keyword">sizeof</span>(magic)).bad() || magic.<a class="code" href="structbitmap_magic.html#a477646205ecad5019613626f0b478694">magic</a>[0] != 0x42 || magic.<a class="code" href="structbitmap_magic.html#a477646205ecad5019613626f0b478694">magic</a>[1] != 0x4d)</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;    {</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;        <span class="comment">/* Not a valid BMP file header */</span></div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;        cerr &lt;&lt; <span class="stringliteral">&quot;Not a valid BMP file header. &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;        <span class="keywordflow">if</span> (imageFile.is_open())</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;        {</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;            imageFile.close();</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;        }</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;    }</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;    <span class="comment">/* 54 is the standard size of a bitmap header. */</span></div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;    <span class="keywordflow">if</span> (imageFile.read((<span class="keywordtype">char</span>*)&amp;header, <span class="keyword">sizeof</span>(header)).bad() || header.<a class="code" href="structbitmap_header.html#a5e74a0bfe6340ad581369b48bce59dbe" title="Offset in bytes to the beginning of the image data block.">offset</a> != 54)</div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;    {</div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;        <span class="comment">/* Not a supported BMP format */</span></div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;        cerr &lt;&lt; <span class="stringliteral">&quot;Not a supported BMP format. &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;        <span class="keywordflow">if</span> (imageFile.is_open())</div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;        {</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;            imageFile.close();</div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;        }</div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;    }</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;</div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;    <span class="keywordflow">if</span> (imageFile.read((<span class="keywordtype">char</span>*)&amp;informationHeader, <span class="keyword">sizeof</span>(informationHeader)).bad() || informationHeader.<a class="code" href="structbitmap_information_header.html#a1a6659ee7987cc1be662ec93a6f2eef7">compressionType</a> != 0 || informationHeader.<a class="code" href="structbitmap_information_header.html#ae25aec64837eed48f745ae7728af7dff">bitsPerPixel</a> != 24)</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;    {</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;        <span class="comment">/* We only support uncompressed 24-bits per pixel RGB */</span></div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;        cerr &lt;&lt; <span class="stringliteral">&quot;We only support uncompressed 24-bits per pixel RGB. &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;        <span class="keywordflow">if</span> (imageFile.is_open())</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;        {</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;            imageFile.close();</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;        }</div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;    }</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;</div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;    <span class="keywordtype">int</span> row_delta;</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;    <span class="keywordtype">int</span> first_row;</div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;    <span class="keywordtype">int</span> after_last_row;</div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;    <span class="keywordflow">if</span> (informationHeader.<a class="code" href="structbitmap_information_header.html#a5c5209b385872825e8f9c629ac288a12">height</a> &gt; 0)</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;    {</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;        <span class="comment">/* The image is stored upside down in memory */</span></div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;        row_delta = -1;</div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;        first_row = informationHeader.<a class="code" href="structbitmap_information_header.html#a5c5209b385872825e8f9c629ac288a12">height</a> - 1;</div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;        after_last_row = -1;</div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;    }</div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;    <span class="keywordflow">else</span></div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;    {</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;        informationHeader.<a class="code" href="structbitmap_information_header.html#a5c5209b385872825e8f9c629ac288a12">height</a> = -informationHeader.<a class="code" href="structbitmap_information_header.html#a5c5209b385872825e8f9c629ac288a12">height</a>;</div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;        row_delta = 1;</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;        first_row = 0;</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;        after_last_row = informationHeader.<a class="code" href="structbitmap_information_header.html#a5c5209b385872825e8f9c629ac288a12">height</a>;</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;    }</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;    <span class="comment">/* Calculate the paddle of the image to skip it when reading the buffer. */</span></div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;    <span class="keywordtype">int</span> paddedWidth = informationHeader.<a class="code" href="structbitmap_information_header.html#abb2a108b489900502eb06b3982b0dc02">width</a> * 3;</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;    <span class="keywordflow">while</span>((paddedWidth % 4) != 0)</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;    {</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;        paddedWidth++;</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;    }</div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;</div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;    <span class="comment">/* 24-bits per pixel means 3 bytes of data per pixel. */</span></div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;    <span class="keywordtype">int</span> <a class="code" href="structbitmap_information_header.html#afd30cb5246210713920211afb56f13f0">size</a> = 3 * paddedWidth * informationHeader.<a class="code" href="structbitmap_information_header.html#a5c5209b385872825e8f9c629ac288a12">height</a>;</div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;    *imageData = <span class="keyword">new</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>[<a class="code" href="structbitmap_information_header.html#afd30cb5246210713920211afb56f13f0">size</a>];</div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;    <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* readBuffer = <span class="keyword">new</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>[<a class="code" href="structbitmap_information_header.html#afd30cb5246210713920211afb56f13f0">size</a>];</div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;</div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;    <span class="comment">/* Try to read in the image data. */</span></div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;    <span class="keywordflow">if</span> (imageFile.read((<span class="keywordtype">char</span>*)readBuffer, size).bad())</div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;    {</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;        cerr &lt;&lt; <span class="stringliteral">&quot;Error reading main image data. &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;        <span class="keywordflow">if</span> (imageFile.is_open())</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;        {</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;            imageFile.close();</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;        }</div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;        <span class="keywordflow">if</span> (readBuffer != NULL)</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;        {</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;            <span class="keyword">delete</span> [] readBuffer;</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;        }</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;    }</div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;    <span class="keywordtype">int</span> readBufferIndex = 0;</div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;    <span class="comment">/* Loop throught the image data and store it at the output data location. */</span></div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> y = first_row; y != after_last_row; y += row_delta)</div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;    {</div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> x = 0; x &lt; informationHeader.<a class="code" href="structbitmap_information_header.html#abb2a108b489900502eb06b3982b0dc02">width</a>; x++)</div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;        {</div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;            <span class="comment">/* The pixels lie in BGR order, we need to resort them into RGB */</span></div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;            (*imageData)[3 * (y * informationHeader.<a class="code" href="structbitmap_information_header.html#abb2a108b489900502eb06b3982b0dc02">width</a> + x) + 0] = readBuffer[readBufferIndex + 2];</div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;            (*imageData)[3 * (y * informationHeader.<a class="code" href="structbitmap_information_header.html#abb2a108b489900502eb06b3982b0dc02">width</a> + x) + 1] = readBuffer[readBufferIndex + 1];</div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;            (*imageData)[3 * (y * informationHeader.<a class="code" href="structbitmap_information_header.html#abb2a108b489900502eb06b3982b0dc02">width</a> + x) + 2] = readBuffer[readBufferIndex + 0];</div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;            readBufferIndex += 3;</div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;        }</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;        <span class="comment">/* Skip padding. */</span></div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;        readBufferIndex += paddedWidth - (informationHeader.<a class="code" href="structbitmap_information_header.html#abb2a108b489900502eb06b3982b0dc02">width</a> * 3);</div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;    }</div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;</div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;    *width  = informationHeader.<a class="code" href="structbitmap_information_header.html#abb2a108b489900502eb06b3982b0dc02">width</a>;</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;    *height = informationHeader.<a class="code" href="structbitmap_information_header.html#a5c5209b385872825e8f9c629ac288a12">height</a>;</div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;    <span class="keywordflow">if</span> (imageFile.is_open())</div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;    {</div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;        imageFile.close();</div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;    }</div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;    <span class="keywordflow">if</span> (readBuffer != NULL)</div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;    {</div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;        <span class="keyword">delete</span> [] readBuffer;</div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;    }</div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;</div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;    <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;}</div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;</div>
<div class="line"><a name="l00243"></a><span class="lineno"><a class="code" href="image_8h.html#a9390e4ddc634d83452a15e93017ab979">  243</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="image_8cpp.html#a9390e4ddc634d83452a15e93017ab979" title="Convert 8-bits per pixel luminance data to 24-bits per pixel RGB data.">luminanceToRGB</a>(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* luminanceData, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* rgbData, <span class="keywordtype">int</span> <a class="code" href="structbitmap_information_header.html#abb2a108b489900502eb06b3982b0dc02">width</a>, <span class="keywordtype">int</span> <a class="code" href="structbitmap_information_header.html#a5c5209b385872825e8f9c629ac288a12">height</a>)</div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;{</div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;    <span class="keywordflow">if</span> (luminanceData == NULL)</div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;    {</div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;        cerr &lt;&lt; <span class="stringliteral">&quot;luminanceData cannot be NULL. &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;    }</div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;</div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;    <span class="keywordflow">if</span> (rgbData == NULL)</div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;    {</div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;        cerr &lt;&lt; <span class="stringliteral">&quot;rgbData cannot be NULL. &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;    }</div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;</div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> n = width * height - 1; n &gt;= 0; --n)</div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;    {</div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;        <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> d = luminanceData[n];</div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;        rgbData[3 * n + 0] = d;</div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;        rgbData[3 * n + 1] = d;</div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;        rgbData[3 * n + 2] = d;</div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;    }</div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;    <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;}</div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;</div>
<div class="line"><a name="l00267"></a><span class="lineno"><a class="code" href="image_8h.html#a95b53cb5341aa2660b74a5f3a40228de">  267</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="image_8cpp.html#a75fa143dccc45f3d5dc030884ca09cc9" title="Convert 24-bits per pixel RGB data to 8-bits per pixel luminance data.">RGBToLuminance</a>(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* <span class="keyword">const</span> rgbData, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* <span class="keyword">const</span> luminanceData, <span class="keywordtype">int</span> <a class="code" href="structbitmap_information_header.html#abb2a108b489900502eb06b3982b0dc02">width</a>, <span class="keywordtype">int</span> <a class="code" href="structbitmap_information_header.html#a5c5209b385872825e8f9c629ac288a12">height</a>)</div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;{</div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;    <span class="keywordflow">if</span> (rgbData == NULL)</div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;    {</div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;        cerr &lt;&lt; <span class="stringliteral">&quot;rgbData cannot be NULL. &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;    }</div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;</div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;    <span class="keywordflow">if</span> (luminanceData == NULL)</div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;    {</div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;        cerr &lt;&lt; <span class="stringliteral">&quot;luminanceData cannot be NULL. &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;    }</div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;</div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> n = width * height - 1; n &gt;= 0; --n)</div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;    {</div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;        <span class="keywordtype">float</span> r = rgbData[3 * n + 0];</div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;        <span class="keywordtype">float</span> g = rgbData[3 * n + 1];</div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;        <span class="keywordtype">float</span> b = rgbData[3 * n + 2];</div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;        luminanceData[n] = (<span class="keywordtype">unsigned</span> char) (0.2126f * r + 0.7152f * g + 0.0722f * b);</div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;    }</div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;    <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;}</div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;</div>
<div class="line"><a name="l00291"></a><span class="lineno"><a class="code" href="image_8h.html#a189e940abcfb40459918c86ab01a1121">  291</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="image_8cpp.html#a83b7aea3d44c26db2222227c0dc5d19a" title="Convert 24-bits per pixel RGB data to 32-bits per pixel RGBA data.">RGBToRGBA</a>(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* <span class="keyword">const</span> rgbData, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* <span class="keyword">const</span> rgbaData, <span class="keywordtype">int</span> <a class="code" href="structbitmap_information_header.html#abb2a108b489900502eb06b3982b0dc02">width</a>, <span class="keywordtype">int</span> <a class="code" href="structbitmap_information_header.html#a5c5209b385872825e8f9c629ac288a12">height</a>)</div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;{</div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;    <span class="keywordflow">if</span> (rgbData == NULL)</div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;    {</div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;        cerr &lt;&lt; <span class="stringliteral">&quot;rgbData cannot be NULL. &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;    }</div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;</div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;    <span class="keywordflow">if</span> (rgbaData == NULL)</div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;    {</div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;        cerr &lt;&lt; <span class="stringliteral">&quot;rgbaData cannot be NULL. &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;    }</div>
<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;</div>
<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> n = 0; n &lt; width * <a class="code" href="structbitmap_information_header.html#a5c5209b385872825e8f9c629ac288a12">height</a>; n++)</div>
<div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;    {</div>
<div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;        <span class="comment">/* Copy the RGB components directly. */</span></div>
<div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;        rgbaData[4 * n + 0] = rgbData[3 * n + 0];</div>
<div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;        rgbaData[4 * n + 1] = rgbData[3 * n + 1];</div>
<div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;        rgbaData[4 * n + 2] = rgbData[3 * n + 2];</div>
<div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;</div>
<div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;        <span class="comment">/* Set the alpha channel to 255 (fully opaque). */</span></div>
<div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;        rgbaData[4 * n + 3] = (<span class="keywordtype">unsigned</span> char)255;</div>
<div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;    }</div>
<div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;    <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;}</div>
<div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;</div>
<div class="line"><a name="l00318"></a><span class="lineno"><a class="code" href="image_8h.html#a3d566da55411efac7e49e2f33bf6c155">  318</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="image_8cpp.html#a872cec0732df69b80796a61acea716f0" title="Convert 32-bits per pixel RGBA data to 24-bits per pixel RGB data.">RGBAToRGB</a>(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* <span class="keyword">const</span> rgbaData, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* <span class="keyword">const</span> rgbData, <span class="keywordtype">int</span> <a class="code" href="structbitmap_information_header.html#abb2a108b489900502eb06b3982b0dc02">width</a>, <span class="keywordtype">int</span> <a class="code" href="structbitmap_information_header.html#a5c5209b385872825e8f9c629ac288a12">height</a>)</div>
<div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;{</div>
<div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;    <span class="keywordflow">if</span> (rgbaData == NULL)</div>
<div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;    {</div>
<div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;        cerr &lt;&lt; <span class="stringliteral">&quot;rgbaData cannot be NULL. &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;    }</div>
<div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;</div>
<div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;    <span class="keywordflow">if</span> (rgbData == NULL)</div>
<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;    {</div>
<div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;        cerr &lt;&lt; <span class="stringliteral">&quot;rgbData cannot be NULL. &quot;</span> &lt;&lt; __FILE__ &lt;&lt; <span class="stringliteral">&quot;:&quot;</span>&lt;&lt; __LINE__ &lt;&lt; endl;</div>
<div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;    }</div>
<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;</div>
<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> n = 0; n &lt; width * <a class="code" href="structbitmap_information_header.html#a5c5209b385872825e8f9c629ac288a12">height</a>; n++)</div>
<div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;    {</div>
<div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;        <span class="comment">/* Copy the RGB components but throw away the alpha channel. */</span></div>
<div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;        rgbData[3 * n + 0] = rgbaData[4 * n + 0];</div>
<div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;        rgbData[3 * n + 1] = rgbaData[4 * n + 1];</div>
<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;        rgbData[3 * n + 2] = rgbaData[4 * n + 2];</div>
<div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;    }</div>
<div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;    <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;}</div>
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